import unittest

# from tools import add
from tools import add


# class TestAdd(unittest.TestCase):
#     def test_1(self):
#         self.assertEqual(2, add(1, 1))
#
#     def test_2(self):
#         self.assertEqual(3, add(1, 2))
#
#     def test_3(self):
#         self.assertEqual(7, add(3, 4))
#
#     def test_4(self):
#         self.assertEqual(9, add(4, 5))
class TestAdd(unittest.TestCase):
    def test1(self):
        self.assertEqual(3, add(1, 2))

    def test2(self):
        self.assertEqual(5, add(2, 3))

    def test3(self):
        self.assertEqual(7, add(3, 4))

    def test4(self):
        self.assertEqual(9, add(4, 5))